# Microbit cannot connect to computer through USB after flashing scratch setting

**URL:** https://forum.makecode.com/t/microbit-cannot-connect-to-computer-through-usb-after-flashing-scratch-setting/16656
**Category:** micro:bit
**Created:** [November 28, 2022, 5:52pm UTC](https://forum.makecode.com/t/microbit-cannot-connect-to-computer-through-usb-after-flashing-scratch-setting/16656 "2022-11-28T17:52:11Z")
**Posts on this page:** 1
**Page:** 1

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### Author: ![windflower28](https://avatars.discourse-cdn.com/v4/letter/w/b19c9b/32.png) [@windflower28](https://forum.makecode.com/u/windflower28)
#### Post date: [November 28, 2022, 5:52pm UTC](https://forum.makecode.com/t/microbit-cannot-connect-to-computer-through-usb-after-flashing-scratch-setting/16656/1 "2022-11-28T17:52:11Z")

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My microbit cannot connect to commpter (Win 11 os) when plug in USB now.  
the board was able to connect to PC before.  
I think it happen just after I install some setting on it to let the microbit can work with Scratch.  
I followed the instruction :

> **[Connecting the micro:bit to Scratch](https://support.microbit.org/support/solutions/articles/19000026080-using-the-micro-bit-with-scratch)**
>
> Scratch The micro:bit extension for scratch allows you to connect wirelessly with the micro:bit. There are a couple of steps to set this up and then you can use the blocks in all sorts of programs. Ensure your device is capable of running t...

I installed a scratch link program in PC and flashed the file “scratch-microbit-1.2.0.hex” to microbit.  
It works. so that I can connect the board with scratch editor.

but the problem exist when I found that it cannot connect to the PC through USB now. When it plug in, the PC does not pop to show new USB device. on the microbit , the power led is on. and the LED on the board shows a five digit code, I think it should be its serial code. (on this situation it can connect with scratch online editor)

even i try to flash a hex file by “[makecode.microbit.org](http://makecode.microbit.org)” online editor. it cannot connect with Microbit.

I want to know how to remove the sratch setting in my microbit and let it connect to PC with USB, so that i can program it with normal online makecode editor. thanks